Search Console won’t give you keywords, it’s basically just used to map your site and give Google access. Then you add your keywords through Google Analytics tied to the same Search Console account.
It does take time to increase your SEO by yourself, and yes it has to be applicable to your industry of course. For instance I work at a packaging company, and we have blog posts such as “Top Tips for Creating Custom Packaging” or “Differences Between Folding Carton and Rigid Boxes”, etc… It won’t happen overnight or even in the first month or two. It’s not like paid Google ads with instant gratification unfortunately. This is why most larger companies hire a marketing company to handle it if they don’t have their own internal marketing team because it takes some time and dedication.
Backlinks also help, like refer to pages on your website and link them in your blog posts. That way the user stays on your site longer, increasing chances of a conversion. Additionally, most marketing companies can get you in on other website’s posts like “Top 10 Packaging Companies in the US” and that helps quite a bit as well, but again–takes time.